本文整理汇总了C++中AStackString::SetLength方法的典型用法代码示例。如果您正苦于以下问题：C++ AStackString::SetLength方法的具体用法？C++ AStackString::SetLength怎么用？C++ AStackString::SetLength使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AStackString的用法示例。
在下文中一共展示了AStackString::SetLength方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
// CreateThreadLocalTmpDir
//------------------------------------------------------------------------------
/*static*/ void WorkerThread::CreateThreadLocalTmpDir()
{
// create isolated subdir
AStackString<> tmpFileName;
CreateTempFilePath( ".tmp", tmpFileName );
char * lastSlash = tmpFileName.FindLast( NATIVE_SLASH );
tmpFileName.SetLength( (uint32_t)( lastSlash - tmpFileName.Get() ) );
FileIO::EnsurePathExists( tmpFileName );
}示例2: CompareHashTimes_Small
//.........这里部分代码省略.........
}
float time = t.GetElapsed();
float speed = ( (float)dataSize / (float)( 1024 * 1024 * 1024 ) ) / time;
OUTPUT( "Murmur3-32 : %2.3fs @ %6.3f GiB/s (hash: 0x%x)\n", time, speed, crc );
}
// Murmur3 - 128
{
Timer t;
uint64_t hashB( 0 );
uint64_t hashA( 0 );
for ( size_t j=0; j<numIterations; ++j )
{
for ( size_t i=0; i<numStrings; ++i )
{
hashA += Murmur3::Calc128( strings[ i ].Get(), strings[ i ].GetLength(), hashB );
}
}
float time = t.GetElapsed();
float speed = ( (float)dataSize / (float)( 1024 * 1024 * 1024 ) ) / time;
OUTPUT( "Murmur3-128 : %2.3fs @ %6.3f GiB/s (%016llx, %016llx)\n", time, speed, hashA, hashB );
}
// CRC32 - 8x8 slicing
{
Timer t;
uint32_t crc( 0 );
for ( size_t j=0; j<numIterations; ++j )
{
for ( size_t i=0; i<numStrings; ++i )
{
crc += CRC32::Calc( strings[ i ].Get(), strings[ i ].GetLength() );
}
}
float time = t.GetElapsed();
float speed = ( (float)dataSize / (float)( 1024 * 1024 * 1024 ) ) / time;
OUTPUT( "CRC32 8x8 : %2.3fs @ %6.3f GiB/s (hash: 0x%x)\n", time, speed, crc );
}
// CRC32 - "standard" algorithm
{
Timer t;
uint32_t crc( 0 );
for ( size_t j=0; j<numIterations; ++j )
{
for ( size_t i=0; i<numStrings; ++i )
{
crc += CRC32::Start();
crc += CRC32::Update( crc, strings[ i ].Get(), strings[ i ].GetLength() );
crc += CRC32::Stop( crc );
}
}
float time = t.GetElapsed();
float speed = ( (float)dataSize / (float)( 1024 * 1024 * 1024 ) ) / time;
OUTPUT( "CRC32 : %2.3fs @ %6.3f GiB/s (hash: 0x%x)\n", time, speed, crc );
}
// CRC32Lower
{
Timer t;
uint32_t crc( 0 );
for ( size_t j=0; j<numIterations; ++j )
{
for ( size_t i=0; i<numStrings; ++i )
{
crc += CRC32::CalcLower( strings[ i ].Get(), strings[ i ].GetLength() );
}
}
float time = t.GetElapsed();
float speed = ( (float)dataSize / (float)( 1024 * 1024 * 1024 ) ) / time;
OUTPUT( "CRC32Lower : %2.3fs @ %6.3f GiB/s (hash: 0x%x)\n", time, speed, crc );
}
// Murmur3 - 32 Lower
{
Timer t;
// lower-case and hash it
uint32_t crc( 0 );
for ( size_t j=0; j<numIterations; ++j )
{
for ( size_t i=0; i<numStrings; ++i )
{
const AString & str( strings[ i ] );
AStackString<> tmp;
const size_t strLen( str.GetLength() );
tmp.SetLength( (uint32_t)strLen );
for ( size_t k=0; k<strLen; ++k )
{
char c = str[ (uint32_t)k ];
tmp[ (uint32_t)k ] = ( ( c >= 'A' ) && ( c <= 'Z' ) ) ? 'a' + ( c - 'A' ) : c;
}
crc += Murmur3::Calc32( tmp.Get(), tmp.GetLength() );
}
}
float time = t.GetElapsed();
float speed = ( (float)dataSize / (float)( 1024 * 1024 * 1024 ) ) / time;
OUTPUT( "Murmur3-32-Lower: %2.3fs @ %6.3f GiB/s (hash: 0x%x)\n", time, speed, crc );
}
}示例3: projectBasePath
// GenerateVCXProjFilters
//------------------------------------------------------------------------------
const AString & VSProjectGenerator::GenerateVCXProjFilters( const AString & projectFile )
{
// preallocate to avoid re-allocations
m_Tmp.SetReserved( MEGABYTE );
m_Tmp.SetLength( 0 );
// determine folder for project
const char * lastProjSlash = projectFile.FindLast( NATIVE_SLASH );
AStackString<> projectBasePath( projectFile.Get(), lastProjSlash ? lastProjSlash + 1 : projectFile.Get() );
// header
Write( "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" );
Write( "<Project ToolsVersion=\"4.0\" xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\">\n" );
// list of all folders
Array< AString > folders( 1024, true );
// files
{
Write( " <ItemGroup>\n" );
const AString * const fEnd = m_Files.End();
for ( const AString * fIt = m_Files.Begin(); fIt!=fEnd; ++fIt )
{
// get folder part, relative to base dir
AStackString<> folder;
GetFolderPath( *fIt, folder );
const char * fileName = fIt->BeginsWithI( projectBasePath ) ? fIt->Get() + projectBasePath.GetLength() : fIt->Get();
Write( " <CustomBuild Include=\"%s\">\n", fileName );
if ( !folder.IsEmpty() )
{
Write( " <Filter>%s</Filter>\n", folder.Get() );
}
Write( " </CustomBuild>\n" );
// add new folders
if ( !folder.IsEmpty() )
{
for (;;)
{
// add this folder if unique
bool found = false;
for ( const AString * it=folders.Begin(); it!=folders.End(); ++it )
{
if ( it->CompareI( folder ) == 0 )
{
found = true;
break;
}
}
if ( !found )
{
folders.Append( folder );
}
// handle intermediate folders
const char * lastSlash = folder.FindLast( BACK_SLASH );
if ( lastSlash == nullptr )
{
break;
}
folder.SetLength( (uint32_t)( lastSlash - folder.Get() ) );
}
}
}
Write( " </ItemGroup>\n" );
}
// folders
{
const AString * const fEnd = folders.End();
for ( const AString * fIt = folders.Begin(); fIt!=fEnd; ++fIt )
{
Write( " <ItemGroup>\n" );
Write( " <Filter Include=\"%s\">\n", fIt->Get() );
Write( " <UniqueIdentifier>{%08x-6c94-4f93-bc2a-7f5284b7d434}</UniqueIdentifier>\n", CRC32::Calc( *fIt ) );
Write( " </Filter>\n" );
Write( " </ItemGroup>\n" );
}
}
// footer
Write( "</Project>" ); // no carriage return
m_OutputVCXProjFilters = m_Tmp;
return m_OutputVCXProjFilters;
}